EP3144581B1 - Module de rétroéclairage et dispositif d'affichage - Google Patents

Module de rétroéclairage et dispositif d'affichage Download PDF

Info

Publication number
EP3144581B1
EP3144581B1 EP14870642.7A EP14870642A EP3144581B1 EP 3144581 B1 EP3144581 B1 EP 3144581B1 EP 14870642 A EP14870642 A EP 14870642A EP 3144581 B1 EP3144581 B1 EP 3144581B1
Authority
EP
European Patent Office
Prior art keywords
light source
light
backlight module
source elements
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP14870642.7A
Other languages
German (de)
English (en)
Other versions
EP3144581A1 (fr
EP3144581A4 (fr
Inventor
Lan FENG
Zheng Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Publication of EP3144581A1 publication Critical patent/EP3144581A1/fr
Publication of EP3144581A4 publication Critical patent/EP3144581A4/fr
Application granted granted Critical
Publication of EP3144581B1 publication Critical patent/EP3144581B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/05—Optical design plane
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the present invention relates to the technical field of display, in particular to a backlight module and a display device.
  • Backlight sources in the prior art mainly comprises side type backlight source and direct type backlight source; the principle of the backlight source is providing light to a display device, which light is emitted from light source elements set in a backboard of the backlight source.
  • Defects of the prior art are that: the brightness adjustment of the display device in the prior art is realized by adjusting the electric current of all the light source elements in the backlight source, the adjustment range is relatively small; moreover, even in a situation that a low brightness is required for the display device, all the light source elements are still in working condition, affecting the service life of the backlight source.
  • WO2009131333A2 discloses an illuminator including: plural substrates that are stacked with a space therebeween, and plural light sources that are respectively mounted on each substrate which irradiate light. A light-transmitting unit is formed on the upper substrate among the plural substrates so that the light irradiated from the light source installed on the lower substrate may pass through the light-transmitting unit.
  • the preamble of claim 1 is based on this disclosure.
  • the present invention provides a backlight module and a display device to improve the adjustment range of the brightness for the display device, improving the display effect of the display device.
  • An embodiment of the present invention provides a backlight module; the backlight module comprises:
  • light can be provided to the display device by applying one or both of the light source layers, improving the adjustable range of the display brightness for the display device; meanwhile, in a situation that a low brightness is required for the display device, one of the first and the second light source layers can be turned off, reducing the operation time for a part of the light source elements, thereby improving the service life of the light source elements; moreover, when one of the first and the second light source layers fails, another light source layer can still provide light for the display device to ensure the normal operation of the display device, improving the emergency capability of the display device; furthermore, the utilization of light can also be improved by applying the optical components.
  • the triple prisms are normal triple prisms.
  • a width of the second light source element is not greater than a width of the interval between adjacent first light source elements.
  • both the first light source elements and the second light source elements are organic light emitting diode lamp strips. In this way a good light emitting can be ensured.
  • the optical components further comprise a substrate material; the triple prisms are arranged on the substrate material; a refractive index of the triple prisms is higher than a refractive index of the substrate material.
  • the present invention also provides a display device and an electronic equipment comprising the display device; wherein the display device comprises a display panel and above mentioned backlight module, the backlight module is arranged on a light inputting side of the display panel.
  • light can be provided to the display device by applying one or both of the light source layers, improving the adjustable range of the display brightness for the display device; meanwhile, in a situation that a low brightness is required for the display device, one of the first and the second light source layers can be turned off, reducing the operation time for a part of the light source elements, thereby improving the service life of the light source elements; moreover, when one of the first and the second light source layers fails, another light source layer can still provide light for the display device to ensure the normal operation of the display device, improving the emergency capability of the display device; furthermore, the utilization of light can also be improved by applying the optical components.
  • the present invention provides a backlight module and a display device to improve the adjustment range of the brightness for the display device, improving the display effect of the display device.
  • two layers of light source elements are provided, thereby improving the adjustment range of light for the backlight module, and improving the display effect of the display device.
  • Fig. 1 shows a structural schematic diagram of a backlight module provided by a first example useful for understanding the present invention
  • Fig. 2 shows a structural schematic diagram of a backlight module provided by a second example useful for understanding the present invention.
  • the backlight module comprises:
  • light can be provided to the display device by the first light source layer 20 or the second light source layer 30 separately.
  • a part of the light emitted from the second light source elements 31 of the second light source layer 30 directly irradiates the display panel 10 after passes through the intervals between the first light source elements 21 in the first light source layer 20; the propagation path of another part of the light originally irradiating the first light source elements 21 is changed by the optical components 40, such that the light also irradiates the display panel 10 after passes through the intervals between the first light source elements 21.
  • the light originally blocked by the first light source elements 21 can irradiate the display panel 10 after passes through the intervals, thereby improving the utilization of light, providing a brighter image displayed by the display device, and improving the display effect of the display device.
  • light can be provided to the display device by separately applying the first light source layer 20, separately applying the second light source layer 30, or simultaneously applying both of the light source layers, improving the adjustable range of the display brightness for the display device; meanwhile, in a situation that a low brightness is required for the display device, one of the first light source layer 20 and the second light source layer 30 can be turned off, reducing the operation time for the turned-off light source elements, thereby improving the service life of the light source elements; moreover, when one of the first light source layer 20 and the second light source layer 30 fails, another light source layer can still provide light for the display device to ensure the normal operation of the display device, improving the emergency capability of the display device; furthermore, the utilization of light can also be improved by applying the optical components.
  • the width of the second light source element 31 is not greater than the width of the interval between adjacent first light source elements 21. In this way, it is ensured that more light emitted from the second light source elements 31 can pass through the intervals between the first light source elements 21, improving the situation that the light emitted from the second light source elements 31 is blocked by the first light source elements 21.
  • the optical components 40 can be optical components 40 with different structures.
  • the structures of the optical components 40 in the display device provided by the examples and embodiments of the present invention are illustrated in detail with Figs. 1-3 .
  • Fig. 1 shows a structure of the optical components.
  • the optical components 40 can comprise a first reflective layer 42 arranged on a side of the first light source elements 21 facing the second light source elements 31, and a second reflective layer 41 arranged between adjacent second light source elements 31.
  • the first reflective layer 42 and the second reflective layer 41 can be metal layers with high reflectance.
  • a part of light emitted from the second light source elements 31 irradiates the first light source elements 21.
  • the light is reflected by the first reflective layer 42, which is arranged on the first light source elements 21; after being reflected, the light then irradiates the second reflective layer 41 between the second light source elements 31, undergoes reflecting of the second reflective layer 41, and irradiates the display panel 10 through the intervals between the first light source elements 21.
  • the light irradiating the first light source elements 21 and originally blocked by the first light source elements 21 can irradiate the display panel 10 after passes through the intervals, thereby improving the utilization of light, providing a brighter image displayed by the display device, and improving the display effect of the display device.
  • the first reflective layer 42 and the second reflective layer 41 can be made of metal with high reflectance, improving the reflective effect for light and avoiding the loss of light.
  • the optical components 40 comprise lenses 43, the lenses 43 are arranged one-to-one corresponding to every second light source elements 31 and change propagation path of light from the second light source elements 31 irradiating the first light source elements 21 such that the light is emitted through the intervals.
  • Different structures can be used as the structure of the lenses 43, as will be illustrated with the following specific example and embodiment.
  • Fig. 2 shows another structure of the optical components.
  • the lenses 43 provided in the second example are convex lenses 431; each of the convex lenses 431 corresponds to one second light source element 31.
  • the convex lens 431 has a function of converging light: the direction of the light originally irradiating the first light source elements 21 is changed by the refraction of the convex lenses 431, such that the light irradiates the display panel 10 after passes through the intervals between the first light source elements 21, thereby improving the brightness of the display panel 10, and improving the display effect of the display device.
  • each of the convex lenses 431 one-to-one corresponds to each of the second light source elements 31; and the second light source element 31 is positioned on a focal plane of the corresponding convex lens 431, such that the light emitted from the second light source element 31 can be converged by the corresponding convex lens 431, ensuring that more light can irradiate the display panel 10.
  • the diameter of the convex lens 431 is 1 ⁇ 2 times of the width of the second light source element 31; in this way it is ensured that all of the light emitted from the second light source elements 31 can be converged by the convex lenses 431, improving the utilization of light. More preferably, the diameter of the convex lens 431 is two times of the width of the second light source element 31; in this way the manufacture of the convex lenses 431 and converging of light are facilitated.
  • a primary exposure unit can be obtained by way of photolithography on a substrate; a micro rectangular array structure is firstly formed; then the substrate is heated, the hot-melt photoresist forms micro structure of the convex lens 431 due to the effect of surface tension; after heating and curing, the micro lenses structure is then coated with a flat layer.
  • the flat layer can be made of organic material, of which the thickness is in millimeter level to ensure the flatness of the surface, facilitating the manufacture of the first light source layer 20.
  • the micro structure of the convex lenses 431 can be made of polyester organic material, as long as the refractive index of the polyester organic material (e.g. polycarbonate, with a refractive index of 1.58) is higher than that of the substrate material.
  • Fig. 3 shows yet another structure of the optical which is according to an embodiment of the present invention.
  • the lenses 43 provided in the embodiment are triple prisms 432; each of the triple prisms 432 corresponds to one second light source element 31.
  • the light emitted from the second light source elements 31 enters the triple prisms 432.
  • the triple prism 432 has a function of converging light: the direction of the light originally irradiating the first light source elements 21 is changed by the refraction of the triple prisms 432, such that the light irradiates the display panel 10 after passes through the intervals between the first light source elements 21, thereby improving the brightness of the display panel 10, and improving the display effect of the display device.
  • each of the triple prisms 432 one-to-one corresponds to each of the second light source elements 31; for the positioning of the triple prisms 432, different structures can be applied to refract light to the display panel 10, which light is emitted from the second light source elements 31 and irradiates the first light source elements 21.
  • the optical components 40 comprise a substrate material and triple prisms 432 arranged on the substrate material, wherein the refractive index of the triple prisms 432 is higher than that of the substrate material. Referring to Fig. 3 again, the positioning direction shown in Fig.
  • a surface of the triple prism 432 is an incident plane, and the other two surfaces are exit surfaces; the incident plane is positioned on and parallel to the second light source elements 31.
  • the light emitted from the second light source elements 31 is refracted on the exit surfaces of the triple prisms 432. In this manner, the light can be converged into the intervals between the first light source elements 21, ensuring that the light can irradiate the display panel 10 after passes through the intervals, thereby improving the utilization of light, providing a brighter image displayed by the display device, and improving the display effect of the display device.
  • the width of the triple prism 432 is 1 ⁇ 2 times of the width of the second light source element 31; in this way it is ensured that all of the light emitted from the second light source elements 31 can be converged by the triple prisms 432, improving the utilization of light. More preferably, the diameter of the triple prism 432 is two times of the width of the second light source element 31; in this way the manufacture of the triple prisms 432 and converging of light are facilitated.
  • a primary exposure unit can be obtained by way of photolithography on a substrate; a micro rectangular array structure is firstly formed; then the substrate is heated, the hot-melt photoresist forms micro structure of the triple prisms 432 due to the effect of surface tension; after heating and curing, the micro lenses structure is then coated with a flat layer.
  • the flat layer can be made of organic material, of which the thickness is in millimeter level to ensure the flatness of the surface, facilitating the manufacture of the first light source layer 20.
  • the micro structure of the triple prisms 432 can be made of polyester organic material, as long as the refractive index of the polyester organic material (e.g. polycarbonate, with a refractive index of 1.58) is higher than that of the flat layer material.
  • the first light source elements 21 and the second light source elements 31 can be same or different light source elements.
  • both the first light source elements 21 and the second light source elements 31 are organic light emitting diode lamp strips. In this way a good effect of illuminating can be ensured.
  • the present invention also provides a display device and an electronic equipment comprising the display device; wherein the display device comprises a display panel 10 and the backlight module mentioned in any one of the above embodiments, the backlight module is arranged on a light inputting side of the display panel.
  • the display device provided in the embodiments of the present invention can be any product or component with display function, such as liquid crystal panel, electronic paper, mobile phone, tablet computer, TV, monitor, notebook computer, digital photo frame, and navigator.
  • display function such as liquid crystal panel, electronic paper, mobile phone, tablet computer, TV, monitor, notebook computer, digital photo frame, and navigator.
  • light can be provided to the display device by applying one or both of the light source layers, improving the adjustable range of the display brightness for the display device; meanwhile, in a situation that a low brightness is required for the display device, one of the first and the second light source layers can be turned off, reducing the operation time for a part of the light source elements, thereby improving the service life of the light source elements; moreover, when one of the first and the second light source layers fails, another light source layer can still provide light for the display device to ensure the normal operation of the display device, improving the emergency capability of the display device; furthermore, the utilization of light can also be improved by applying the optical components.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Claims (7)

  1. Module de rétroéclairage, dans lequel le module de rétroéclairage comprend :
    une première couche de source de lumière (20) située sur une surface d'un côté émetteur de lumière du module de rétroéclairage, la première couche de source de lumière (20) comprend une pluralité de premiers éléments de source de lumière (21) agencés à intervalles ;
    une seconde couche de source de lumière (30) située sur une surface opposée au côté émetteur de lumière du module de rétroéclairage, dans lequel la seconde couche de source de lumière (30) comprend une pluralité de seconds éléments de source de lumière (31) agencés un à un de manière correspondante aux positions des intervalles entre les premiers éléments de source de lumière adjacents (21) ;
    dans lequel le module de rétroéclairage comprend en outre des composants optiques (40) agencés entre la première couche de source de lumière (20) et la seconde couche de source de lumière (30), les composants optiques (40) modifient le trajet de propagation de la lumière émise depuis les seconds éléments de source de lumière (31) et se propageant vers les premiers éléments de source de lumière (21) de sorte que la lumière est émise à travers les intervalles ;
    caractérisé en ce que les composants optiques (40) comprennent des prismes triples (432), les prismes triples (432) sont agencés un à un de manière correspondante aux seconds éléments de source de lumière (31).
  2. Module de rétroéclairage selon la revendication 1, dans lequel les prismes triples (432) sont des prismes triples normaux.
  3. Module de rétroéclairage selon la revendication 1, dans lequel une largeur du second élément de source de lumière (31) n'est pas supérieure à une largeur de l'intervalle entre les premiers éléments de source de lumière adjacents (21).
  4. Module de rétroéclairage selon la revendication 1, dans lequel à la fois les premiers éléments de source de lumière (21) et les seconds éléments de source de lumière (31) sont des bandes de lampe à diode électroluminescente organique.
  5. Module de rétroéclairage selon la revendication 1, dans lequel les composants optiques (40) comprennent en outre un matériau de substrat ; les prismes triples (432) sont agencés sur le matériau de substrat ; un indice de réfraction des prismes triples (432) est supérieur à un indice de réfraction du matériau de substrat.
  6. Dispositif d'affichage, dans lequel le dispositif d'affichage comprend un panneau d'affichage et un module de rétroéclairage, le module de rétroéclairage est agencé sur un côté d'entrée de lumière du panneau d'affichage ; dans lequel le module de rétroéclairage comprend :
    une première couche de source de lumière (20) située sur une surface d'un côté émetteur de lumière du module de rétroéclairage, laquelle première couche de source de lumière (20) comprend une pluralité de premiers éléments de source de lumière (21) agencés à intervalles ;
    une seconde couche de source de lumière (30) située sur une surface opposée au côté émetteur de lumière du module de rétroéclairage, dans lequel la seconde couche de source de lumière (30) comprend une pluralité de seconds éléments de source de lumière (31) agencés un à un de manière correspondante aux positions des intervalles entre les premiers éléments de source de lumière adjacents (21) ; et
    des composants optiques (40) agencés entre la première couche de source de lumière (20) et la seconde couche de source de lumière (30), lesquels composants optiques (40) modifient le trajet de propagation de la lumière émise depuis les seconds éléments de source de lumière (31) et se propageant vers les premiers éléments de source de lumière (21) de sorte que la lumière est émise à travers les intervalles ;
    caractérisé en ce que les composants optiques (40) comprennent des prismes triples (432), les prismes triples (432) sont agencés un à un de manière correspondante aux seconds éléments de source de lumière (31).
  7. Equipement électronique, dans lequel l'équipement électronique comprend un dispositif d'affichage comprenant un panneau d'affichage et un module de rétroéclairage, le module de rétroéclairage est agencé sur un côté d'entrée de lumière du panneau d'affichage ; dans lequel le module de rétroéclairage comprend :
    une première couche de source de lumière (20) située sur une surface d'un côté émetteur de lumière du module de rétroéclairage, laquelle première couche de source de lumière (20) comprend une pluralité de premiers éléments de source de lumière (21) agencés à intervalles ;
    une seconde couche de source de lumière (30) située sur une surface opposée au côté émetteur de lumière du module de rétroéclairage, dans lequel la seconde couche de source de lumière (30) comprend une pluralité de seconds éléments de source de lumière (31) agencés un à un de manière correspondante aux positions des intervalles entre les premiers éléments de source de lumière adjacents (21) ; et
    des composants optiques (40) agencés entre la première couche de source de lumière (20) et la seconde couche de source de lumière (30), lesquels composants optiques (40) modifient le trajet de propagation de la lumière émise depuis les seconds éléments de source de lumière (31) et se propageant vers les premiers éléments de source de lumière (21) de sorte que la lumière est émise à travers les intervalles ;
    caractérisé en ce que les composants optiques (40) comprennent des prismes triples (432), les prismes triples (432) sont agencés un à un de manière correspondante aux seconds éléments de source de lumière (31).
EP14870642.7A 2014-05-16 2014-08-29 Module de rétroéclairage et dispositif d'affichage Not-in-force EP3144581B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410207184.9A CN104141909B (zh) 2014-05-16 2014-05-16 一种背光模组及显示装置
PCT/CN2014/085534 WO2015172461A1 (fr) 2014-05-16 2014-08-29 Module de rétroéclairage et dispositif d'affichage

Publications (3)

Publication Number Publication Date
EP3144581A1 EP3144581A1 (fr) 2017-03-22
EP3144581A4 EP3144581A4 (fr) 2018-01-03
EP3144581B1 true EP3144581B1 (fr) 2020-12-23

Family

ID=51851177

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14870642.7A Not-in-force EP3144581B1 (fr) 2014-05-16 2014-08-29 Module de rétroéclairage et dispositif d'affichage

Country Status (4)

Country Link
US (1) US9739445B2 (fr)
EP (1) EP3144581B1 (fr)
CN (1) CN104141909B (fr)
WO (1) WO2015172461A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109188780B (zh) * 2018-11-21 2022-04-19 厦门天马微电子有限公司 一种直下式背光模组及显示装置
CN109557720B (zh) * 2018-12-04 2022-07-12 厦门天马微电子有限公司 一种背光模组及显示装置
CN109799648B (zh) * 2019-04-10 2021-12-24 合肥京东方视讯科技有限公司 光源组件、背光模组及显示装置
CN115394210A (zh) * 2022-08-16 2022-11-25 昆山锦林光电材料有限公司 一种提升小型led区域调光效果的反射片封装结构
CN116931324B (zh) * 2023-08-04 2025-07-25 维沃移动通信有限公司 显示屏及电子设备

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7976176B2 (en) * 2005-09-28 2011-07-12 Sharp Kabushiki Kaisha Lighting unit, backlight unit, and liquid crystal display device
KR101165731B1 (ko) * 2006-01-23 2012-07-18 삼성전자주식회사 발광다이오드를 갖는 백라이트 어셈블리
CN101680633B (zh) 2007-06-06 2011-07-27 夏普株式会社 背光单元和液晶显示装置
JP4474441B2 (ja) 2007-06-29 2010-06-02 株式会社沖データ 発光パネル、表示装置及び光源装置
KR100912426B1 (ko) * 2008-04-21 2009-08-14 이상철 조명장치, 이를 채용한 백라이트 유니트 및 백라이트유니트를 채용한 디스플레이장치
CN101749666B (zh) 2008-12-05 2012-05-02 上海向隆电子科技有限公司 背光模块的光源布设结构
CN201318632Y (zh) 2008-12-05 2009-09-30 上海向隆电子科技有限公司 背光模块的光源布设结构
US8568012B2 (en) * 2010-01-18 2013-10-29 Lg Innotek Co., Ltd. Lighting unit and display device having the same
TW201232114A (en) 2011-01-31 2012-08-01 Radiant Opto Electronics Corp Backlight module
CN102644879B (zh) * 2012-03-30 2015-09-09 深圳市华星光电技术有限公司 发光二极管灯条构造
TWM464691U (zh) * 2013-06-28 2013-11-01 Unity Opto Technology Co Ltd 直下擺設而側入光源之背光模組

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN104141909B (zh) 2016-05-18
US9739445B2 (en) 2017-08-22
CN104141909A (zh) 2014-11-12
WO2015172461A1 (fr) 2015-11-19
EP3144581A1 (fr) 2017-03-22
EP3144581A4 (fr) 2018-01-03
US20160265737A1 (en) 2016-09-15

Similar Documents

Publication Publication Date Title
US10330844B1 (en) Backlight unit and display device
CN104503129B (zh) 一种光学模组和反射型显示装置
US20120154712A1 (en) Liquid crystal display device and backlight module thereof
KR20160072240A (ko) 백라이트 모듈 및 상기 백라이트 모듈을 이용한 액정 디스플레이 장치
EP3144581B1 (fr) Module de rétroéclairage et dispositif d'affichage
US10073207B2 (en) Display device having liquid crystal layer sealed between sealing member, first substrate, and second substrate
KR20150041324A (ko) 도광판 및 이를 구비한 백라이트 어셈블리
US8136975B2 (en) Optical film applied to a side-emitting backlight module
KR101777528B1 (ko) 백라이트 모듈 및 백라이트 모듈을 사용하는 액정 디스플레이 장치
KR101740194B1 (ko) 표시 패널 유닛 및 표시 장치
US20190011789A1 (en) Liquid crystal display panel and manufacturing method thereof
KR101651888B1 (ko) 백라이트 장치
US9958601B2 (en) Display backlight
US20170059764A1 (en) Light guide plate, backlight unit and display device
KR102064751B1 (ko) 베젤이 최소화된 액정표시소자
KR101662237B1 (ko) 백라이트 유닛
CN108073000A (zh) 背光模组和液晶显示器
CN101303478A (zh) 液晶显示装置及其背光模块
CN107144916A (zh) 一种背光模组及其控制方法、显示装置
JP4125198B2 (ja) 液晶表示素子
US10018778B2 (en) Liquid crystal display device
KR100838332B1 (ko) 평판 디스플레이용 백라이트 구조
TWI437327B (zh) 背光模組
KR100892623B1 (ko) 평판 디스플레이용 백라이트 구조
CN207895197U (zh) 背光模组和液晶显示器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20150619

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

R17P Request for examination filed (corrected)

Effective date: 20150619

DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602014073685

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F21S0008000000

Ipc: G02F0001133570

A4 Supplementary search report drawn up and despatched

Effective date: 20171201

RIC1 Information provided on ipc code assigned before grant

Ipc: G02F 1/13357 20060101AFI20171127BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20200219

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200713

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602014073685

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1348303

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210324

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210323

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1348303

Country of ref document: AT

Kind code of ref document: T

Effective date: 20201223

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20201223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210323

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210423

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602014073685

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

26N No opposition filed

Effective date: 20210924

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20210829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210423

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210829

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210829

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20140829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230821

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201223

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602014073685

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20250301